ESD protection for In-vehicle networks
7 February 2020 Product data sheet
1. General description
Fully OPEN Alliance 100BASE-T1 and 1000BASE-T1 compliant Electrostatic discharge (ESD) protection device in a small SOT23 surface-mounted plastic package designed to protect two automotive in-vehicle network bus lines from the damage caused by ESD and other transients.
2. Features and benefits
• Fully OPEN Alliance 100BASE-T1 and 1000BASE-T1 compliant
• High trigger voltage: V
t1= 100 V min.
• Low capacitance: C
d< 2 pF
• ESD protection up to 30 kV (IEC 61000-4-2)
• 1000 contact discharges (OPEN Alliance specification) with 15 kV (IEC 61000-4-2)
• AEC-Q101 qualified / automotive grade
3. Applications
ESD protection for in-vehicle network lines In-automotive environments
• OPEN Alliance 100/1000BASE-T1 Ethernet
• Low-Voltage Differential Signaling (LVDS) automotive
4. Quick reference data
Table 1. Quick reference data
Symbol Parameter Conditions Min Typ Max Unit
V
RWMreverse standoff
voltage T
amb= 25 °C - - 24 V
C
ddiode capacitance f = 1 MHz; V
R= 0 V; T
amb= 25 °C - 1.8 2 pF
V
t1trigger voltage T
amb= 25 °C [1] 100 140 - V
IEC 61000-4-2; contact discharge [2] [3] 30 - - kV V
ESDelectrostatic discharge
voltage 1000 contact discharges (IEC
61000-4-2); OPEN Alliance specification [3] 15 - - kV [1] Non-repetitive current pulse, Transmission Line Pulse (TLP); square pulse; ANSI / ESD STM5.5.1-2008
[2] Device stressed with ten non-repetitive ESD pulses.
[3] Measured from pin 1 or 2 to pin 3.
5. Pinning information
Table 2. Pinning information
Pin Symbol Description Simplified outline Graphic symbol
1 K cathode
2 K cathode
3 CC common cathode
1 2
3
SOT23
K2 K1
006aaa155 CC
6. Ordering information
Table 3. Ordering information Package Type number
Name Description Version
PESD2ETH1G-T SOT23 plastic, surface-mounted package; 3 terminals; 1.9 mm pitch; 2.9
mm x 1.3 mm x 1 mm body SOT23
7. Marking
Table 4. Marking codes
Type number Marking code[1]
PESD2ETH1G-T %HK
[1] % = placeholder for manufacturing site code
8. Limiting values
Table 5. Limiting values
In accordance with the Absolute Maximum Rating System (IEC60134)
Symbol Parameter Conditions Min Max Unit
I
PPMrated peak pulse current t
p= 8/20 µs [1] [2] - 2.3 A
T
jjunction temperature - 150 °C
T
ambambient temperature -55 150 °C
T
stgstorage temperature -65 150 °C
IEC 61000-4-2; contact discharge [3] [2] 30 - kV ISO 10605; contact discharge; C = 150 pF;
R = 330 Ω [3] [2] 30 - kV
ISO 10605; contact discharge; C = 330 pF;
R = 330 Ω [3] [2] 30 - kV
V
ESDelectrostatic discharge voltage
1000 contact discharges (IEC 61000-4-2);
OPEN Alliance specification [2] 15 - kV
[1] Device stressed with 8/20 μs exponential decay waveform according to IEC 61000-4-5.
[2] Measured from pin 1 or 2 to pin 3.
[3] Device stressed with ten non-repetitive ESD pulses.
t (µs)
0 10 20 30 40
001aaa630
40 80 120 IPP (%)
0
e-t 100 % IPP; 8 µs
50 % IPP; 20 µs
Fig. 1. 8/20 µs pulse waveform according to IEC 61000-4-5
001aaa631 IPP
100 % 90 %
t 30 ns
60 ns 10 %
tr = 0.6 ns to 1 ns
Fig. 2. ESD pulse waveform according to IEC 61000-4-2
PESD2ETH1G-T All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2020. All rights reserved
Product data sheet 7 February 2020 3 / 18
9. Characteristics
Table 6. Characteristics
Symbol Parameter Conditions Min Typ Max Unit
V
RWMreverse standoff
voltage - - 24 V
V
hholding voltage [1] 28 - - V
V
t1trigger voltage
T
amb= 25 °C
[1] 100 140 - V
I
RMreverse leakage current V
RWM= 24 V; V
R= 0 V; T
amb= 25 °C - 1 100 nA
C
ddiode capacitance f = 1 MHz; V
R= 0 V; T
amb= 25 °C - 1.8 2 pF
[2] - 0.5 - %
ΔC
d/C
ddiode capacitance
matching f = 1 MHz; V
R= 2.5 V; T
amb= 25 °C [2] - 0.5 - %
R
dyndynamic resistance I
R= 40 A; T
amb= 25 °C [1] - 0.6 - Ω
[1] Non-repetitive current pulse, Transmission Line Pulse (TLP); square pulse; ANSI / ESD STM5.5.1-2008
[2] ΔC
dis the difference of the capacitance measured between pin 1 and pin 3 and the capacitance measured between pin 2 and pin 3.
reverse
I V
Vh Vt1
V I
forward
aaa-030568 Rdyn = V/ I
Fig. 3. V-I characteristics for a bidirectional ESD protection diode
Tj (°C)
0 50 100 150 200
001aaa193
0.4 0.8 1.2 PPP
0 PPP(25°C)
Fig. 4. Relative variation of peak pulse power as a
function of junction temperature; typical values
VCL (V)
0 40 80 120 160 200
aaa-030811
40
20 60 80 IPP (A)
0
t
r= 1 ns
t
p= 100 ns; Transmission Line Pulse (TLP) Fig. 5. Dynamic resistance with positive clamping;
typical values
VCL (V)
-200 -160 -120 -80 -40 0
aaa-030812
-40
-60 -20 0 IPP (A)
-80
t
r= 1 ns
t
p= 100 ns; Transmission Line Pulse (TLP) Fig. 6. Dynamic resistance with negative clamping;
typical values
PESD2ETH1G-T All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2020. All rights reserved
Product data sheet 7 February 2020 5 / 18
10. Application information
In the „IEEE 100BASE-T1 EMC Test Specification for ESD suppression devices“
1document (further referred as OPEN Alliance 100BASE-T1 specification), the OPEN Alliance describes four different tests to ensure compliance of ESD suppressor devices and PHYs which are compliant according to the document “Transceiver EMC Test Specification”. The PESD2ETH1G-T passes all tests as shown on figures 6 to 16. Furthermore, it complies with the requirements mentioned in Section 2.2. of „IEEE 100BASE-T1 EMC Test Specification for ESD suppression devices“.
aaa-030093 100 nF
100 nF common mode choke
according to OPEN
alliance according
to OPEN alliance 100BASE-T1
transceiver
1 kΩ 1 kΩ
100 kΩ 4.7 nF
PESD2ETH1G-T
BI_DA+
BI_DA-
Fig. 7. Application diagram
The return loss and insertion loss are evaluated using the differential S-parameters S
dd11and S
dd21. These measurements replace the requirement for a certain capacitance value. To ensure symmetry, the differential to common mode rejection is evaluated using the S-parameter S
sd21. This measurement replaces the requirement for a matching of the capacitances per line. To ensure that the device does not degrade and changes behavior after repetitive ESD events, the S-parameter measurements are repeated after discharging 20 times ±8 kV ESD on signal lines 1 and 2, with C
= 150 pF, R = 330 Ω according to ISO 10605. Subsequently, the S-parameters are measured again and compared to the original data.
aaa-030065
-40
-60 -20 0 Sdd11
(dB)
-80
f (Hz)
106 107 108 109
FAIL
PASS (1)
(2)
(1) limit according to OPEN Alliance 100BASE-T1 specification
(2) PESD2ETH1G-T Fig. 8. Return loss
f (Hz)
106 107 108 109
aaa-030089
-45 -35
-55 -25 -15 Sdd11
(dB)
-65
(1)
(2)
PESD2ETH1G-T
(1) before repetitive ESD event (2) after 20 times ±8 kV ESD Fig. 9. Return loss
1 OPEN Alliance: "IEEE 100BASE-T1 EMC Test Specification for ESD suppression devices", version 1.0
rev. draft, December 10, 2018
aaa-030066
-3 -1 1 Sdd21
(dB)
-5
f (Hz)
106 107 108 109
FAIL PASS
(1) (2)
(1) limit according to OPEN Alliance 100BASE-T1 specification
(2) PESD2ETH1G-T Fig. 10. Insertion loss
f (Hz)
106 107 108 109
aaa-030090
-2 -1
-3 0 1 Sdd21
(dB)
-4
(1) (2)
PESD2ETH1G-T
(1) before repetitive ESD event (2) after 20 times ±8 kV ESD Fig. 11. Insertion loss
aaa-030067
-80 -60 -40 Ssd21
(dB)
-100
f (Hz)
106 107 108 109
FAIL
PASS (1)
(2)
(1) limit according to OPEN Alliance 100BASE-T1 specification
(2) PESD2ETH1G-T
Fig. 12. Differential to common mode rejection
aaa-030091
-60 -30 0 Scd21
(dB)
-90
f (Hz)
106 107 108 109
(2) (1)
PESD2ETH1G-T
(1) before repetitive ESD event (2) after 20 times ±8 kV ESD
Fig. 13. Differential to common mode rejection
PESD2ETH1G-T All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2020. All rights reserved
Product data sheet 7 February 2020 7 / 18
To predict if the ESD suppressor device would protect a PHY of a certain robustness class (Class I (JEDEC-HBM 4 kV) and Class II (JEDEC-HBM 2 kV)), the ESD discharge current is measured in a reference circuit according to OPEN Alliance 100BASE-T1 specification for ±4 kV and ±6 kV according to IEC 61000-4-2 with C = 150 pF and R = 330 Ω. Unlike in the OPEN Alliance 100BASE-T1 specification of October 29 2017, the „Transceiver Simulation network“ is implemented with 2 Ω and 50 Ω resistors.
t (ns)
40 90 140 190
aaa-030068
1 3 5 IESD
(A)
-1
(3)
(1) (2)
(1) PESD2ETH1G-T (2) limit Class II (3) limit Class I
Fig. 14. ESD discharge current at +4 kV
t (ns)
40 90 140 190
aaa-030071
-3 -1 1 IESD
(A)
-5
(3) (1)
(2)
(1) PESD2ETH1G-T (2) limit Class II (3) limit Class I
Fig. 15. ESD discharge current at -4 kV
t (ns)
40 90 140 190
aaa-030070
1 3 5 IESD
(A)
-1
(3)
(1) (2)
(1) PESD2ETH1G-T (2) limit Class II (3) limit Class I
Fig. 16. ESD discharge current at +6 kV
t (ns)
40 90 140 190
aaa-030069
-3 -1 1 IESD
(A)
-5
(3) (1)
(2)
(1) PESD2ETH1G-T (2) limit Class II (3) limit Class I
Fig. 17. ESD discharge current at -6 kV
To ensure that the ESD suppressor device is not impacting the EMC performance of the complete module, the RF clamping test as defined in the OPEN Alliance specification is applied. First a measurement at a reference power level of 25 dBm is conducted in an environment defined by the OPEN Alliance 100BASE-T1 specification. Next, the power is increased to 33 dBm (Class I), 36 dBm (Class II), and 39 dBm (Class III). No change in the measured common mode rejection indicates that the ESD suppressor device is not impacting the modules EMC performance.
aaa-030872
-40 -20 0 Ssd21
(dB)
-60
f (Hz)
106 107 108 109
(1)
(2) (3) (4)
According to OPEN Alliance 100BASE-T1 specification Common mode rejection for:
(1) reference (2) Class I (3) Class II (4) Class III Fig. 18. RF Clamping Test
PESD2ETH1G-T All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2020. All rights reserved
Product data sheet 7 February 2020 9 / 18
For 1000BASE-T1, there is no published document on the requirements for external ESD suppressor devices. However, a similar requirement specification is in preparation at the time the present document is created. To support the conformity of PESD2ETH1G-T with the to-be- published requirement specification of OPEN Alliance for 1000BASE-T1, results of tests adapted from OPEN Alliance specification for 100BASE-T1 are shown. In this tests, limits are adapted to the current state of the art and the common-mode choke is selected in compliance with the published OPEN Alliance document “IEEE 1000BASE-T1 EMC Test Specification for Common Mode Chokes Version 1.0” as of January 16, 2018.
The following graphs show the S-parameters with adapted limit lines. ESD damage test results of 100BASE-T1 are also valid for 1000BASE-T1.
aaa-030813
-40
-60 -20 0 Sdd11
(dB)
-80
f (Hz)
106 107 108 109
FAIL
PASS (1)
(2)
(1) limit according to state of the art for 1000BASE-T1
(2) PESD2ETH1G-T Fig. 19. Return loss
aaa-030814
-3 -1 1 Sdd21
(dB)
-5
f (Hz)
106 107 108 109
FAIL PASS
(1) (2)
(1) limit according to state of the art for 1000BASE-T1
(2) PESD2ETH1G-T Fig. 20. Insertion loss
aaa-030815
-80 -60 -40 Ssd21
(dB)
-100
f (Hz)
106 107 108 109
FAIL
PASS (1)
(2)
(1) limit according to state of the art for 1000BASE-T1 (2) PESD2ETH1G-T
Fig. 21. Differential to common mode rejection
The following graphs show the discharge current measurements, with a 1000BASE-T1 compliant common-mode choke.
aaa-030632
t (ns)
40 90 140 190
2
0 4 6 IESD
(A)
-2
(3)
(1) (2)
(1) PESD2ETH1G-T (2) limit Class II (3) limit Class I
Fig. 22. ESD discharge current at +4 kV
aaa-030633
-2
-4 0 2 IESD
(A)
-6
(3) (1)
(2)
t (ns)
40 90 140 190
(1) PESD2ETH1G-T (2) limit Class II (3) limit Class I
Fig. 23. ESD discharge current at -4 kV
aaa-030634
2
0 4 6 IESD
(A)
-2
(3)
(1) (2)
t (ns)
40 90 140 190
(1) PESD2ETH1G-T (2) limit Class II (3) limit Class I
Fig. 24. ESD discharge current at +6 kV
aaa-030635
-2
-4 0 2 IESD
(A)
-6
(3) (1)
(2)
t (ns)
40 90 140 190
(1) PESD2ETH1G-T (2) limit Class II (3) limit Class I
Fig. 25. ESD discharge current at -6 kV
PESD2ETH1G-T All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2020. All rights reserved
Product data sheet 7 February 2020 11 / 18
aaa-030636
2
0 4 6 IESD
(A)
-2
(3)
(1) (2)
t (ns)
40 90 140 190
(1) PESD2ETH1G-T (2) limit Class II (3) limit Class I
Fig. 26. ESD discharge current at +8 kV
aaa-030637
-2
-4 0 2 IESD
(A)
-6
(3) (1)
(2)
t (ns)
40 90 140 190
(1) PESD2ETH1G-T (2) limit Class II (3) limit Class I
Fig. 27. ESD discharge current at -8 kV
aaa-030638
2
0 4 6 IESD
(A)
-2
(3)
(1) (2)
t (ns)
40 90 140 190
(1) PESD2ETH1G-T (2) limit Class II (3) limit Class I
Fig. 28. ESD discharge current at +15 kV
aaa-030639
-2
-4 0 2 IESD
(A)
-6
(3) (1)
(2)
t (ns)
40 90 140 190
(1) PESD2ETH1G-T (2) limit Class II (3) limit Class I
Fig. 29. ESD discharge current at -15 kV
The following graph shows the RF clamping test with a 1000BASE-T1 compliant common-mode choke.
aaa-030640
-40 -20 0 Ssd21
(dB)
-60
f (Hz)
106 107 108 109
(1)
(2) (3) (4)
According to state of the art for 1000BASE-T1 Common mode rejection for:
(1) reference (2) Class I (3) Class II (4) Class III Fig. 30. RF Clamping Test
PESD2ETH1G-T All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2020. All rights reserved
Product data sheet 7 February 2020 13 / 18
11. Package outline
References Outline
version European
projection Issue date
IEC JEDEC JEITA
SOT23 TO-236AB
sot023_po
14-06-19 14-09-22
Plastic surface-mounted package; 3 leads SOT23
bp D
A A1
Lp Q HE
E
0 1 2 mm
scale
1 2 c
3
B
w B
e e1
v A
A X
Unit
mm max
nommin
1.1 0.1 0.15 3.0 1.4
0.2 A
Dimensions (mm are the original dimensions) A1 bp
0.48
c D E e e1
0.95
HE Lp Q v w
0.1
1.9 2.1 0.15
0.9 0.38 0.09 2.8 1.2
2.5 0.45 0.45 0.55
detail X
Fig. 31. Package outline SOT23
12. Soldering
solder lands solder resist
occupied area solder paste
sot023_fr (3×)0.5
(3×)0.6
(3×)0.6 (3×)0.7
3
1 3.3 2.9
1.7
1.9
2
Dimensions in mm
Fig. 32. Reflow soldering footprint for SOT23
solder lands solder resist occupied area
preferred transport direction during soldering
sot023_fw 2.8
4.5 1.4
4.6
(2×)1.4
(2×)1.2
2.2
2.6
Dimensions in mm
Fig. 33. Wave soldering footprint for SOT23
PESD2ETH1G-T All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2020. All rights reserved
Product data sheet 7 February 2020 15 / 18
13. Revision history
Table 7. Revision history
Data sheet ID Release date Data sheet status Change notice Supersedes
PESD2ETH1G-T v.2 20200207 Product data sheet - PESD2ETH1G-T v.1
Modifications; • Sections "General description", "Features and benefits", and "Applications": updated
• Table "Quick reference data": updated
• Table "Limiting values": enhanced V
ESD• Section "Characteristics": updated
• Section "Application information": updated
PESD2ETH1G-T v.1 20190708 Objective data sheet - -
14. Legal information
Data sheet status
Document status[1][2] Product
status [3] Definition Objective [short]
data sheet Development This document contains data from the objective specification for product development.
Preliminary [short]
data sheet Qualification This document contains data from the preliminary specification.
Product [short]
data sheet Production This document contains the product specification.
[1] Please consult the most recently issued document before initiating or completing a design.
[2] The term 'short data sheet' is explained in section "Definitions".
[3] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status information is available on the internet at https://www.nexperia.com.
Definitions
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In no event shall Nexperia be liable for any indirect, incidental, punitive, special or consequential damages (including - without limitation - lost profits, lost savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such damages are based on tort (including negligence), warranty, breach of contract or any other legal theory.
Notwithstanding any damages that customer might incur for any reason whatsoever, Nexperia’s aggregate and cumulative liability towards customer for the products described herein shall be limited in accordance with the Terms and conditions of commercial sale of Nexperia.
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Suitability for use in automotive applications — This Nexperia product has been qualified for use in automotive applications. Unless otherwise agreed in writing, the product is not designed, authorized or warranted to be suitable for use in life support, life-critical or safety-critical systems or
equipment, nor in applications where failure or malfunction of an Nexperia product can reasonably be expected to result in personal injury, death or severe property or environmental damage. Nexperia and its suppliers accept no liability for inclusion and/or use of Nexperia products in such equipment or applications and therefore such inclusion and/or use is at the customer's own risk.
Quick reference data — The Quick reference data is an extract of the product data given in the Limiting values and Characteristics sections of this document, and as such is not complete, exhaustive or legally binding.
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Customers are responsible for the design and operation of their applications and products using Nexperia products, and Nexperia accepts no liability for any assistance with applications or customer product design. It is customer’s sole responsibility to determine whether the Nexperia product is suitable and fit for the customer’s applications and products planned, as well as for the planned application and use of customer’s third party customer(s).
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Limiting values — Stress above one or more limiting values (as defined in the Absolute Maximum Ratings System of IEC 60134) will cause permanent damage to the device. Limiting values are stress ratings only and (proper) operation of the device at these or any other conditions above those given in the Recommended operating conditions section (if present) or the Characteristics sections of this document is not warranted. Constant or repeated exposure to limiting values will permanently and irreversibly affect the quality and reliability of the device.
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Trademarks
Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners.
PESD2ETH1G-T All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2020. All rights reserved
Product data sheet 7 February 2020 17 / 18
Contents
1. General description...1
2. Features and benefits... 1
3. Applications... 1
4. Quick reference data...1
5. Pinning information...2
6. Ordering information...2
7. Marking... 2
8. Limiting values... 3
9. Characteristics...4
10. Application information... 6
11. Package outline... 14
12. Soldering... 15
13. Revision history...16
14. Legal information...17
© Nexperia B.V. 2020. All rights reserved For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: [email protected] Date of release: 7 February 2020